SharePoint 2013 DMS

We came across unusual DMS requirements from a customer as below. 

1. If documents has multiple versions, one version could be a .doc and next version could be .xls. It mean User can check-in a document of different format and also with different name than that of the checked out document.

2. A document from Filenet repository can be filed to another folder of the FileNet. So the filed document can be changed anywhere but the changes will be reflected in all documents. This can be done using the manage copy feature of SharePoint but the changes are always moved from Parent copy to the child copy

any solution?? OOTB or with customization?

Mark this post as answer if this resolves your issue.